For anyone who's paid attention to Sen. Harry Reid’s speeches over the last two weeks, it’s hard to deny his preoccupation with the Koch brothers is veering close to full-on obsession status. Nary a Senate speech is given these days without the now customary condemnation of the Koch brothers.

Worried, we asked a psychiatrist what's bedeviling the Nevada senator.

A persecution complex? Paranoid delusions?

In fact, this New York City-based psychiatrist said, it could be “erotomania and may be associated with stalking. Actually, you might use the term stalking."